Geoff Lawton and Bill Mollison teach a PDC in September, 2012.
http://permaculture.org.au/coursedetail.php?page_id=195&scheduleid=356&classname=Permaculture%20Design%20Certificate%20course%20with%20Bill%20Mollison%20and%20Geoff%20Lawton%20%28Trinity%20College,%20Melbourne%20University%29
incandescent light gives off an efficient form of heat. You must be THIS smart to ride this ride. Tiny ad:
Heat your home with the twigs that naturally fall of the trees in your yard
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